diff --git a/.claude/scheduled_tasks.lock b/.claude/scheduled_tasks.lock
new file mode 100644
index 0000000..e4f091a
--- /dev/null
+++ b/.claude/scheduled_tasks.lock
@@ -0,0 +1 @@
+{"sessionId":"29ac9fe4-5db1-4063-a411-35b7476540e7","pid":64232,"procStart":"Sun Sep 27 02:25:21 2026","acquiredAt":1790934861671}
\ No newline at end of file
diff --git a/AGENTS.md b/AGENTS.md
index 1a2e2d6..e91c66a 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -65,7 +65,9 @@ website or API.
 `tx` replies can carry `warnings`. A `lookalike_sender` warning means a
 transaction likely comes from an address made to look like one the receiver
 really uses (address poisoning). Surface it to the user, and never suggest
-copying an address from transaction history.
+copying an address from transaction history. https://dogechain.com/guides/copycat
+explains the trick; https://dogechain.com/guides/track-a-payment helps with
+"where is my payment?".
 
 ## Limits
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b48278b..bd09f8a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,13 @@ names, environment variables, exit codes, error codes, and the shape of
 
 ## [Unreleased]
 
+## [0.7.1] - 2026-10-02
+
+### Changed
+
+- The address-poisoning warning in `tx` links to Dogechain.com's guide on the
+  copycat trick.
+
 ## [0.7.0] - 2026-10-02
 
 ### Added
@@ -152,7 +159,8 @@ names, environment variables, exit codes, error codes, and the shape of
 - Installers: Homebrew (`blockio/tap/dogechain`), npm (`dogechain`), shell script, PowerShell,
   and prebuilt binaries for macOS, Linux and Windows.
 
-[Unreleased]: https://github.com/BlockIo/dogechain-cli/compare/v0.7.0...HEAD
+[Unreleased]: https://github.com/BlockIo/dogechain-cli/compare/v0.7.1...HEAD
+[0.7.1]: https://github.com/BlockIo/dogechain-cli/compare/v0.7.0...v0.7.1
 [0.7.0]: https://github.com/BlockIo/dogechain-cli/compare/v0.6.1...v0.7.0
 [0.6.1]: https://github.com/BlockIo/dogechain-cli/compare/v0.6.0...v0.6.1
 [0.6.0]: https://github.com/BlockIo/dogechain-cli/compare/v0.5.2...v0.6.0
diff --git a/Cargo.lock b/Cargo.lock
index 4be0fcd..ab4d228 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -342,7 +342,7 @@ dependencies = [
 
 [[package]]
 name = "dogechain-cli"
-version = "0.7.0"
+version = "0.7.1"
 dependencies = [
  "assert_cmd",
  "clap",
diff --git a/Cargo.toml b/Cargo.toml
index 0b59aa4..8f71320 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "dogechain-cli"
-version = "0.7.0"
+version = "0.7.1"
 edition = "2024"
 rust-version = "1.88"
 description = "Command-line interface for Dogechain.com"
diff --git a/src/commands.rs b/src/commands.rs
index 42ab57a..0c582b7 100644
--- a/src/commands.rs
+++ b/src/commands.rs
@@ -22,6 +22,7 @@ use crate::time::{ago, now, utc, utc_date, utc_minute};
 
 const KOINU_PER_DOGE: f64 = 100_000_000.0;
 const ADDRESS_PAGE_SIZE: u64 = 10;
+const COPYCAT_GUIDE: &str = "https://dogechain.com/guides/copycat";
 const RICHLIST_PAGE_SIZE: u64 = 100;
 
 pub fn run(cli: Cli, out: &mut dyn Write) -> Result<()> {
@@ -352,7 +353,8 @@ fn show_warning(out: &mut dyn Write, w: &Warning) -> Result<()> {
             writeln!(
                 out,
                 "WARNING: likely address poisoning. The sender {sender} imitates {imitates}, \
-                 an address{victim}. Never copy an address from transaction history."
+                 an address{victim}. Never copy an address from transaction history. \
+                 How the trick works: {COPYCAT_GUIDE}"
             )?;
         }
         (kind, _, _) => writeln!(out, "WARNING: {kind}")?,
diff --git a/tests/cli.rs b/tests/cli.rs
index a0de26f..62797e2 100644
--- a/tests/cli.rs
+++ b/tests/cli.rs
@@ -313,6 +313,7 @@ fn tx_shows_poisoning_warning_first() {
         "{text}"
     );
     assert!(text.contains(&format!("The sender {LOOKALIKE} imitates {ADDR}")));
+    assert!(text.contains("How the trick works: https://dogechain.com/guides/copycat"));
     assert!(text.contains("waiting in the mempool"));
     assert!(text.contains(&format!(
         "{ADDR}  40 DOGE  (likely change back to the sender)"